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nexus/wiki/concepts/Pay-as-you-go.md
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---
title: Pay-as-you-go
type: concept
tags: [Cloud, Cost-Optimization, Business-Model]
sources: [The-Myths-and-Misconceptions-About-Cloud-Computing-LinkedIn.md]
last_updated: 2025-03-02
---
## Definition
按需付费Pay-as-you-go是一种基于实际使用量计费的商业模式用户根据资源消耗而非固定订阅支付费用。
## Core Features
- 弹性计费:根据实际使用量收费
- 无需大额前期投资:降低资本支出
- 资源弹性扩展:根据业务需求动态调整
- 成本透明:按使用量精确计费
## Cost Optimization Strategies
- 预留实例Reserved Instances长期使用可享折扣
- 自动扩展Auto-scaling根据负载自动调整资源
- 无服务器计算Serverless Computing仅按实际计算时间计费
## Key Claims
- 云计算采用按需付费模式,允许企业按需扩展资源
- 成本优化策略如预留实例、自动扩展和无服务器计算有助于降低费用
- 消除本地硬件采购、维护和升级需求通常可带来显著成本节省
## Connections
- [[CAPEX-to-OPEX]] ← implements ← [[Pay-as-you-go]]:按需付费是 CAPEX 到 OPEX 转型的实现方式
- [[Auto-scaling]] ← supports ← [[Pay-as-you-go]]:自动扩展优化按需付费成本
- [[Serverless-Computing]] ← extends ← [[Pay-as-you-go]]:无服务器是最细粒度的按需付费